Objective: To evaluate the clinical performance of three preventive materials on the occlusal surfaces of primary molars over a 36-month period. Material and Methods: The study was conducted with a split-mouth design involving four experimental groups: G1 -resin-modified glass ionomer cement (Vitremer ® ); G2 -resin sealant (Alpha Seal Light ® ); G3 -silver diamine fluoride (Cariostatic ® ); and G4 -control group without material. Thirty-two children aged 36 to 60 months, attending a pediatric clinic, with a deft index ≥ 1 and four primary second molars participated in the study. The material retention was evaluated in G1 and G2, and the presence of incipient caries was evaluated in all groups. Data were submitted to the Wilcoxon test and survival test (α = 5%). Results: At three, six, 12, 24 and 36 months, G2 exhibited greater material loss (maximum loss: 44%) in comparison to G1 (maximum loss: 35%), but this difference did not achieve statistical significance (p = 0.214). The highest incidence of incipient caries occurred in G3 (20%), but no significant differences were found between groups at any evaluation time (p = 0.154). Conclusion: There were no statistically significant differences between the evaluated products regarding material retention and dental caries, although there was more material loss in teeth that received the Alpha Seal ® sealant resin, and a greater number of carious lesions in the Cariostatic® group (silver diamine fluoride).

Objective: This study evaluated the prevalence, clinical management and sequelae in deciduous teeth involved and permanent successors in 150 children (256 deciduous teeth. Of these, 63.3% were male, 24-35 months of age at the time of the trauma (37.9%) and the falls (78.1%) represented the major etiological factor. In relation to the type of injury, 24.6% was enamel fracture; 62.5% showed support tissue injury (lateral luxation, 22.3%). In the first and second assessments (T1 and T2), the average follow-up time was 14.5 and 26 months (256 and 131 teeth).We diagnosed clinical and radiographic sequels including discoloration of the crown (T1-15.6; T2-13.7%), inflammatory root resorption (T1-7.0; T2-8.4%); and in permanent successors, enamel hypoplasia (T1-1.2; T2-2.3%), eruption disturbances (T1-2.0; T2-1.5%).The chi-square test evidenced association, in T1, between injuries to the supporting tissues and clinical (p = 0.003) and radiographic (p = 0.004) sequelae in permanent successors; and between clinical sequelae and age at the time of trauma (p = 0.005). In T2, radiological sequelae in deciduous teeth with injuries to the tooth and supporting tissue (p = 0.035); as well as clinical sequelae with elapsed time of trauma in permanent teeth (p = 0.005). It is concluded that the follow-up of traumatized deciduous teeth is essential to prevent sequelae.

Posteriorly repositioning the mandible produced a series of histological and morphological responses in the condyle, suggesting condylar and mandibular adaptation in rats.

Franco QUEIROZ, Marina Luordes FRACASSO O traumatismo na época da dentição decídua, constitui-se num problema freqüente, sendo o incisivo central o mais acometido. Alterações na morfologia ou mineralização da coroa do incisivo permanente são os tipos mais comuns de complicações, podendo variar de pequenas opacidades de esmalte a graves malformações. O presente trabalho se propõe a relatar o caso clínico de uma criança com presença de erupção ectópica e dilaceração da coroa no dente 11, e hipoplasia de esmalte no 11 e 12. Foi relatado na anamnese um traumatismo dentário, ocorrido aos 4 anos de idade, devido a um coice de um cavalo, ocorrendo a luxação do 61, e a avulsão do dente 51. Depois de realizado o tratamento de emergência perdeu-se o contato com o profissional. Aos 7 anos o paciente retornou ao consultório queixando-se da ausência do dente 11, diagnosticando-se retenção prolongada, indicativo de tracionamento. No entanto, o abandono às consultas de retorno inviabilizou o tratamento. Decorridos 3 anos, foi instalado um aparelho ortopédico para o tracionamento correto, para em seguida ser realizado o tratamento restaurador estético. Concluiu-se, portanto, que os controles clínicos e radiográficos freqüentes, aliados ao envolvimento da família, são fatores decisivos no tratamento de seqüelas pós-traumáticas em crianças.